Finding the Fourth Proportional to 3,729.12, 5,146.83 and 2,158.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,729.12 : 5,146.83 = 2,158.08 : x
2. Step 2: Convert to fraction form
   3,729.12/5,146.83 = 2,158.08/x
3. Step 3: Cross multiply
   3,729.12x = 5,146.83 × 2,158.08
4. Step 4: Simplify right side
   3,729.12x = 11,107,270.89
5. Step 5: Solve for x
   x = 11,107,270.89/3,729.12
6. Step 6: Final answer
   x = 2,978.52